/**
 * Moondance UML modeling tool
 * 
 * This program is free software; you can redistribute it and
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

package ro.pub.cs.se.moondance.editpolicy;

import org.eclipse.gef.commands.Command;
import org.eclipse.gef.editpolicies.DirectEditPolicy;
import org.eclipse.gef.requests.DirectEditRequest;
import org.eclipse.jface.viewers.CellEditor;

import ro.pub.cs.se.moondance.command.ChangePackageNameCommand;
import ro.pub.cs.se.moondance.editpart.PackageEditPart;
import ro.pub.cs.se.moondance.model.UMLPackage;

/**
 * EditPolicy for the direct editing of class names
 */
public class PackageDirectEditPolicy extends DirectEditPolicy {

	private String oldValue;

	/**
	 * @see DirectEditPolicy#getDirectEditCommand(org.eclipse.gef.requests.DirectEditRequest)
	 */
	protected Command getDirectEditCommand(DirectEditRequest request) {
		UMLPackage _package = (UMLPackage) getHost().getModel();
		ChangePackageNameCommand cmd = new ChangePackageNameCommand(_package);
		cmd.setOldName(_package.getName());
		CellEditor cellEditor = request.getCellEditor();
		cmd.setConfigurationString((String) cellEditor.getValue());
		return cmd;
	}

	/**
	 * @see DirectEditPolicy#showCurrentEditValue(org.eclipse.gef.requests.DirectEditRequest)
	 */
	protected void showCurrentEditValue(DirectEditRequest request) {
		String value = (String) request.getCellEditor().getValue();
		PackageEditPart packageEditPart = (PackageEditPart) getHost();
		packageEditPart.handleNameChange(value);
	}

	/**
	 * @param to
	 *            Saves the initial text value so that if the user's changes are
	 *            not committed then
	 */
	protected void storeOldEditValue(DirectEditRequest request) {
		CellEditor cellEditor = request.getCellEditor();
		oldValue = (String) cellEditor.getValue();
	}

	/**
	 * @param request
	 */
	protected void revertOldEditValue(DirectEditRequest request) {
		CellEditor cellEditor = request.getCellEditor();
		cellEditor.setValue(oldValue);
		PackageEditPart packageEditPart = (PackageEditPart) getHost();
		packageEditPart.revertNameChange();
	}
}